Overview

The YBM3A-12/0.4 series prefabricated substation is designed and manufactured to meet the needs of domestic users. The utility model has the advantages of compact structure, strong set, safe and reliable operation, convenient maintenance, small appearance, small footprint and convenient movement. Product performance has reached the domestic advanced level.

 

Characteristics

◆The shell is designed according to foreign advanced technology and according to actual conditions. It has the characteristics of firmness, heat insulation and ventilation, dustproof, anti-small animal, moisture-proof, beautiful appearance and convenient maintenance. The shell material is available in aluminum alloy plate, steel plate and composite plate.

◆The high pressure side adopts compressed air type, SF6 load switch or vacuum load switch, which has reliable anti-misoperation function. The transformer can be either an oil-immersed transformer or a fully sealed transformer, and a dry-type transformer can be used. The low-pressure side adopts the latest plastic shell automatic air switch, which has high breaking capacity and good protection performance. The YBM3A-12/0.4 outlet circuit can be up to 30.

◆Automatic reactive power compensation device can also be selected when the user requests it.

◆The substation is equipped with a self-controlled exhaust device to meet the requirements of high temperature areas. Anti-condensation dehumidification heating automatic control device can be installed when the user requests it to meet the special requirements of the alpine region.

◆ The substation is easy to install, and the movable floor is installed in the low-voltage room of the substation. People can directly enter the cable trench.

◆ Substation has a variety of design options for use.

◆ On the basis of ordinary box-type substation, embed the main board, ceramic tile, etc. or other decorative materials according to user requirements. You can make a landscape box change.

 

  The main technical parameters

◆ rated voltage high voltage side 12kV

Low voltage side 0.4/0.23kV

 

◆Rated capacity 50-1250kVA

 

◆Rated frequency 50Hz

 

◆ rated short-time withstand current

High pressure 12.5kA/4S20kA/2S

Low pressure 200-400kVA15kA (1S)

400-800kVA30kA (lS)

l000kVA and above depending on the equipment used

 

◆ rated peak withstand current

High pressure 31.5kA/50kA

Low pressure 200-400kVA/30kA

400-800kVA/30kA (IS)

l000kVA and above depending on the equipment used

 

◆ rated closing current high voltage 31.5kA50kA

 

◆The level of extinction

High voltage switchgear:

Power frequency withstand voltage (ground and phase / isolation fracture) 42/48kV

Lightning impulse withstand voltage (ground and phase/isolation fracture) 75/85kV

Transformer

Power frequency withstand voltage (oil change / dry change) 35/28kV

Lightning impulse withstand voltage 75kV

Low voltage switchgear

Power frequency withstand voltage

2000V when the rated voltage is 60≤Ue≤300V

2500V when rated voltage 300≤Ue≤660V

 

◆Noise level

Oil immersion device: 55db

Dry type transformer: 65db

 

◆Shell protection level

Transformer room IP23, high pressure room IP33DH

Low pressure chamber IP33DH

Normal use environmental conditions

 

◆ The altitude does not exceed l000m.

 

◆The ambient air temperature is not higher than +40 °C, not lower than -25 °C.

 

◆The outdoor wind speed does not exceed 35m/s.

 

◆ Relative humidity: The daily average is not large -95%, and the monthly average is not more than 90%.

 

◆Installation location: Installed in a place where there is no fire, explosion hazard, no serious pollution, chemical corrosion and severe vibration.

 

Internal structure